Ventilating device.



L. S. GRAEBING.

VENTILATING DEVICE.

APPLICATION IILEDMAB. 16, 1908.

Patented June 15, 1909.

I mmvro/z fia 7 06 ATTORNEY Cir UNITE STfiTlltlri LAWRENCE S. GRAEBING,Oil

PATENT tldi it lQE.

YONKERS PARK, NEW YORK.

VENTILATiNG DEVICE.

To all whom it may concern:

Be it known that i, LAwnnNon o. LIRAEB ING, a citizen of the UnitedState". resident of Yonkers Park, in the county or Westchestor and Stateof New invented oer 'n -ew and useful Improve ments in VentilatingDevices.

"his invention relates genciuillv tilating devices and particularly toknown as window ventilators.

An object of the invention is to ventilator of this type more characterand particularly to provide for ready automatic or semi-automaticclesrinoof the s :reens for ventilating l1 s.

Furt r objects of the invention .vill be clear from the followingdescription end claims to 1 in connection with the accompanying d vings,which form part of this application, in which like numerals designatecorresponding parts, and in which-- Figure 1 is perspecti -Je View of aninterior ventilating hood when unattached to the window board andembodying tne invention; Fig. 2 is an enlarged cross section throughline H H of Fig. 3 Fig. 3 is s. front elevation of the window board withtwo interior ventilating hoods attached thereto and Fig. 4 is a detailplan view, showing the dovetail locking joint for the window board.

Referring now more in detail to the drawings: 1 designates it windowboard, which comprises the body so ition shown at the eft of Fig. 3 andthe keying section 2, which may vary in size relatively to the bodysection, although the proportion shown in the figure has been found tobe satisfactory. The body section of the board should be short enough soas to be capable of insertion within thwimlow-frame, while by slidingthe keying section 2 down to the position shown by dotted lines in Fig.3, the entire board may be locked or keyed in a window frame. The jointfor connecting the keying section 2 to the body section of the windowframe is preferably a sliding joint as shown and is disposed in aninclined direction to the length of the window board. A male dovetaillocking tenon 3 is formed along the inclined or beveled edge of onesection as, for example, the body section and takes into thecomplementary female portion or slot 4 formed along the inclined orbeveled edge of the keying section 2. The male tenon 3 is shown as anenlarged flange which may conveniently be circular in cross-section.This en- Specification or" Letters Patent.

Patented June 15, i909.

1908. Serial No. $21,891.

largeiil flange 3 is secured to one window board *ection by a narrmv web20. The slot 4 may be coinplen enttry to tenon 3 and ribs 21 provide aconstricted slot in the beveled or inclined edge of section 2 for thepassage of the web 20 of the first section. Thus the ribs 21 cooperetowith tenon 3 and 20 to prevent relative movement of sections 1. and 2,Xcept a sliding movement along their beveled edges. This mode ofinterlocking the sections provii. es sufficient friction between theparts to prevent their sliding apart accii; ntielly when not in use in awindow frame and also permits the readv substitution of k u ng sections2 of selecteii sizes to ill) the assembled board to v-iindows of varioussires and without the trouble of removing and ieessembling any pins orscrews. It has been found. that both wood and sheet metal .window boardsmay readily formed in beveled edge sections socured in sliding relationalong their beveled edges and interlocked egninst movement in. all otherdirections solely by t is interlocking tenon and groove constructiondescribed. 7

The window board 1 may be provided with one or more ventilatingapertures 5, which lead from the outer atmosphere and may be suitablyprotected, if desired, on the exterior of the board. 1 by any suitableexterior ventilating device, as for instance, that snown in my prior:patent 860,356.

The interior ventilating hood 6 is designed to cover the ventilatingaperture 5 and defleet incoming air supply through the venti latingopening shown at the top of the hood 6. The hood 6 may be formedaccording to any suitable pattern and is bo:;-like in character. Whenused with trio window board 1, the portion of the window board indicatedby the numeral 7 cooperates with the hood 6 in forming an upwardlydirected duct, although it is to be understood that, for some purposes,the hood 6 may have its own integral closure at this locality.

A cover 8 is provided for closing the ventilating opening of the hood 6when desired. This cover is shown secured to a wall of the hood 6 by thehinge 9, although the hinge may be otherwise located if desired. Guidingsegmental lips 10 and 11 are secured to the cover 8 and s ving downwithin and preferably in frictional engagement with the sides 12 and 13of the hood 6. In the construction illustrated a cross bar 14 extendstraversely across from lower corner of the lips 10 and 11, completing arectangular inclosure with the lips 10 and 11 and the cover 8. Acrossthis inclosure and secured respectively to the cover 8, cross bar 14 andlips 10 and 11, is a screen 15. It is thus seen in the embodimentillustrated that the screen 15 is fixed relatively to the cover memberand is angularly disposed thereto, the angular opening being the plan ofthe screen and of the cover, is substantially at right angles. However,this arrangement may be varied.

A cross bar 16 suitably secured to the sides 12 and 13, by rivets, asshown, or soldering, brazing, etc, may be provided.

The cover 8 may be swung open so as to leave an air passage through thehood 6 and as shown in Fig. 1. When the cover is opened the screen 15 isswung up so as to extend across the ventilating opening of the hood.When cover 8 is closed across this opening the screen 15 is swung downinto the hood, whereby the jar caused by closing the cover willeffectually disengage any particles of dust, etc., that may have adheredto the screen, this dust, etc., dropping down and being cleared out ofthe ventilating aperture without being discharged into the room orapartment to be ventilated.

Suitable flanges 17, 18 and 19 may be formed on the hood 6 to attach thesame, as by the securing means shown, to any structure providing aventilating aperture, as for instance, the window board 1.

In the construction shown, the Window board 1 may be formed of sheetmetal, as also may the ventilating hood 6. However, it is to beunderstood that any suitable material may be employed in an embodimentof my invention.

Although I have shown and described a preferred embodiment of myinvention, it is to be understood that many modifications thereof arecontemplated within the scope of the following claims, as I considermyself to be the "first to provide an interior ventilating hood with amovable screw for the ventilating openingpvhichwill clear itself of dustand the like, in an automatic or semi-automatic manner, and especiallysuch a screen in combination with a cover for the ventilating opening.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is:

1. In ventilating apparatus, a ventilating hood for covering aventilating aperture, said hood providing a ventilating opening andhaving a movable screen mounted to extend across said opening andmounted to swing from across said opening into dust dischargingposition.

2. In ventilating apparatus, a ventilating hood for covering aventilating aperture, said hood providing a ventilating opening andhaving a screen for extending across said opening, a hinged mounting forsaid screen for moving the same from across said opening idnto dustdischarging position within said hoo 8. In ventilating apparatus, aventilating hood for covering a ventilating aperture, said hoodproviding a ventilating opening; a hinged cover member for closing saidopening" and a screen secured to said cover memher and angularlydisposed thereto, so as to extend across said ventilating opening whenthe cover member is opened and to swing clear so as to move into dustdischarging position when the cover member is closed across saidopening.

4. In ventilating apparatus, a ventilating hood for covering aventilating aperture, said hood providing a ventilating opening at itstop; a cover member hinged to said hood; a screen disposed substantiallyat right angles to said cover member and fixed relatively thereto so asto move with the cover member into and out of screening position anddust discharging position.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses. 1

LAWRENCE S. GRAEBING.

Witnesses:

PAUL H. MORROW, HELEN MONTGOMERY.

